xmega_powerreduction.c

#include <xmega_powerreduction.h>

/*
        #define __PORT_PULLUP(port, mask) { \
                PORTCFG.MPCMASK = mask ; \
                port.PIN0CTRL = PORT_OPC_PULLUP_gc; \
        }

        __PORT_PULLUP(PORTA, 0xFC); // dont pullup LEDs here (0xFC)
        __PORT_PULLUP(PORTB, 0xFF);
        //__PORT_PULLUP(PORTC, 0xFF); // Dont pullup SPI
        //__PORT_PULLUP(PORTD, 0xFF);
        __PORT_PULLUP(PORTE, 0xFF);
        __PORT_PULLUP(PORTF, 0xDF);
        __PORT_PULLUP(PORTR, 0x03);
        */

void xmega_pr_set(uint8_t pr)
{
        PR.PRGEN = pr;
}

// Disable JTAG in SW Mode
void xmega_pr_jtag_enable()
{
        MCU_MCUCR = MCU_JTAGD_bm;
}

void xmega_pr_porta_set(uint8_t pr)
{
        PR.PRPA = pr; // Power Reduction Port A
}

void xmega_pr_portb_set(uint8_t pr)
{
        PR.PRPB = pr; // Power Reduction Port B
}

void xmega_pr_dac_enable(void)
{
        xmega_pr_porta_set(PR_DAC_bm);
        xmega_pr_portb_set(PR_DAC_bm);
}

void xmega_pr_adc_enable(void)
{ 
        xmega_pr_porta_set(PR_ADC_bm);
        xmega_pr_portb_set(PR_ADC_bm);
}

void xmega_pr_ac_enable(void)
{
        xmega_pr_porta_set(PR_AC_bm);
        xmega_pr_portb_set(PR_AC_bm);
}

// Disable TWI on Port C,D,E,F
void xmega_pr_twi_enable(void)
{
        PR.PRPC |= PR_TWI_bm;
        PR.PRPD |= PR_TWI_bm;
        PR.PRPE |= PR_TWI_bm;
        PR.PRPF |= PR_TWI_bm;
}

// Disable HiResolution Mode on Port C,D,E,F
void xmega_pr_hires_enable(void)
{
        PR.PRPC |= PR_HIRES_bm;
        PR.PRPD |= PR_HIRES_bm;
        PR.PRPE |= PR_HIRES_bm;
        PR.PRPF |= PR_HIRES_bm;
}

void xmega_pr_usart1_enable(void)
{
        PR.PRPC |= PR_USART1_bm;
        PR.PRPD |= PR_USART1_bm;
        PR.PRPE |= PR_USART1_bm;
        PR.PRPF |= PR_USART1_bm;
}

void xmega_pr_usart0_enable(void)
{
        PR.PRPC |= PR_USART0_bm;
        PR.PRPD |= PR_USART0_bm;
        PR.PRPE |= PR_USART0_bm;
        PR.PRPF |= PR_USART0_bm;
}

void xmega_pr_tc1_enable(void)
{
        PR.PRPC |= PR_TC1_bm;
        PR.PRPD |= PR_TC1_bm;
        PR.PRPE |= PR_TC1_bm;
        PR.PRPF |= PR_TC1_bm;
}

void xmega_pr_tc0_enable(void)
{
        PR.PRPC |= PR_TC0_bm;
        PR.PRPD |= PR_TC0_bm;
        PR.PRPE |= PR_TC0_bm;
        PR.PRPF |= PR_TC0_bm;
}

void xmega_pr_spi_enable(void)
{
        PR.PRPC |= PR_SPI_bm;
        PR.PRPD |= PR_SPI_bm;
        PR.PRPE |= PR_SPI_bm;
        PR.PRPF |= PR_SPI_bm;
}

void xmega_pr_nvm_enable(void)
{
        NVM.CTRLB |= NVM_FPRM_bm | NVM_EPRM_bm; // Enable Flash and EEPROM Power Reduction
}

void xmega_powerreduction_enable(void)
{
        #if POWERREDUCTION_USB
        xmega_pr_set(PR_USB_bm);
        #endif

        #if POWERREDUCTION_AES
        xmega_pr_set(PR_AES_bm);
        #endif

        #if POWERREDUCTION_EBI
        xmega_pr_set(PR_EBI_bm);
        #endif

        #if POWERREDUCTION_DMA
        xmega_pr_set(PR_DMA_bm);
        #endif

        #if POWERREDUCTION_EVSYS
        xmega_pr_set(PR_EVSYS_bm);
        #endif
        
        #if POWERREDUCTION_RTC
        xmega_pr_set(PR_RTC_bm);
        #endif
        
        #ifdef PR_ENABLE
        // power save modes
        // xmega_pr_set(PR_USB_bm | PR_AES_bm | PR_EBI_bm | PR_DMA_bm | PR_EVSYS_bm); // PR_RTC_bm | PR_EVSYS_bm

        #endif
        
        #if POWERREDUCTION_DAC
        xmega_pr_dac_enable();
        #endif

        #if POWERREDUCTION_ADC
        xmega_pr_adc_enable();
        #endif

        #if POWERREDUCTION_AC
        xmega_pr_ac_enable();
        #endif
        
        #if POWERREDUCTION_TWI
        xmega_pr_twi_enable();
        #endif

        #if POWERREDUCTION_HIRES
        xmega_pr_hires_enable();
        #endif

        #if POWERREDUCTION_USART0
        xmega_pr_usart0_enable();
        #endif

        #if POWERREDUCTION_USART1
        xmega_pr_usart1_enable();
        #endif

        #if POWERREDUCTION_TC0
        xmega_pr_tc0_enable();
        #endif

        #if POWERREDUCTION_TC1
        xmega_pr_tc1_enable();
        #endif

        #if POWERREDUCTION_SPI
        xmega_pr_spi_enable();
        #endif
        
        /*
        PR.PRPC |=             PR_USART0_bm; //  - SPI used for Radio Chip - TC0 used for contiki
        PR.PRPD |= PR_TC0_bm | PR_USART0_bm | PR_SPI_bm;
        PR.PRPE |= PR_TC0_bm                | PR_SPI_bm; // PR_USART0 - Usart used as stdout
        PR.PRPF |= PR_TC0_bm                | PR_SPI_bm;
        */
        
        // Enable JTag PowerReduction in SW Mode
        #if POWERREDUCTION_JTAG
        xmega_pr_jtag_enable();
        #endif
}